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Anisotropy in the equation of state of magnetized quark matter

Authors: Débora P. Menezes, Marcus B. Pinto, and Constança Providência

Ref.: Phys. Rev. C 91, 065205 (2015)

Abstract: The anisotropies in the pressure obtained from the energy-momentum tensor are studied for magnetized quark matter within the su(3) Nambu-Jona-Lasinio model for both β-equilibrium matter and quark matter with equal quark chemical potentials. The effect of the magnetic field on the particle polarization, magnetization, and quark matter constituents is discussed. It is shown that the onset of the s quark after chiral symmetry restoration of the u and d quarks gives rise to a special effect on the magnetization in the corresponding density range: A quite small magnetization just before the s onset is followed by a strong increase of this quantity as soon as the s quark sets in. It is also demonstrated that for B<1018 G within the two scenarios discussed, always considering a constant magnetic field, the two components of pressure are practically coincident.

DOI: 10.1103/PhysRevC.91.065205

URL: arxiv.org